58 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Thorhallsson, Simon | Stefansson, Hannes | 0-1 | A00 | Icelandic team chess championship premier league | 2026-03-08 |
| Thorhallsson, Simon | Ragnarsson, Dagur | 0-1 | D78 | Icelandic team chess championship premier league | 2026-03-07 |
| Thorhallsson, Simon | Johannsson, Birkir Isak | 0-1 | B15 | Icelandic team chess championship premier league | 2026-03-06 |
| Thorhallsson, Simon | Johannesson, Ingvar Thor | 1-0 | E06 | Icelandic team chess championship premier league | 2025-12-04 |
| Thorhallsson, Simon | Laurusas, Tomas | 0-1 | A54 | Icelandic team chess championship premier league | 2025-11-15 |
| Thorhallsson, Simon | Bjarnason, Larus H | 1-0 | B10 | Icelandic Open 2025 | 2025-06-20 |
| Thorhallsson, Simon | Omarsson, Adam | 0-1 | A01 | Icelandic Open 2025 | 2025-06-20 |
| Thorhallsson, Simon | Oskarsson, Markus Orri | 1-0 | D04 | Icelandic Open 2025 | 2025-06-19 |
| Thorhallsson, Simon | Omarsson, Josef | 0-1 | E81 | Icelandic Open 2025 | 2025-06-18 |
| Thorhallsson, Simon | Briem, Gudrun Fanney | 1/2-1/2 | B22 | Icelandic Open 2025 | 2025-06-17 |
| Thorhallsson, Simon | Grant, David J | 1-0 | E64 | 39th European Chess Club Cup | 2024-10-23 |
| Thorhallsson, Simon | Roth, Josef | 1-0 | B65 | 39th European Chess Club Cup | 2024-10-21 |
| Thorhallsson, Simon | Heimisson, Hilmir Freyr | 1/2-1/2 | C42 | Icelandic Chess Championship 2022 | 2022-04-30 |
| Thorhallsson, Simon | Steingrimsson, Hedinn | 0-1 | D11 | Icelandic Chess Championship 2022 | 2022-04-26 |
| Thorhallsson, Simon | Gretarsson, Hjorvar Steinn | 0-1 | D12 | Icelandic Chess Championship 2022 | 2022-04-24 |
| Thorhallsson, Simon | Kjartansson, Gudmundur | 0-1 | D11 | Icelandic Chess Championship 2022 | 2022-04-23 |
| Thorhallsson, Simon | Thorfinnsson, Bragi | 1/2-1/2 | A90 | Icelandic Chess Championship 2022 | 2022-04-21 |
| Thorhallsson, Simon | Briem, Benedikt | 0-1 | B52 | ROpen 2022 | 2022-04-12 |
| Thorhallsson, Simon | George Samir, David | 0-1 | C55 | ROpen 2022 | 2022-04-06 |
| Thorhallsson, Simon | Osmak, Yuliia | 0-1 | E01 | Krageroe Resort Chess 2022 | 2022-02-27 |
| Thorhallsson, Simon | Mikalsen, Erlend | 1/2-1/2 | B62 | Krageroe Resort Chess 2022 | 2022-02-24 |
| Thorhallsson, Simon | Gretarsson, Helgi Ass | 1/2-1/2 | C58 | European Individual Chess Championship 2021 - Reykjavik Open | 2021-08-31 |
| Thorhallsson, Simon | Haraldsson, Haraldur | 1-0 | C50 | European Individual Chess Championship 2021 - Reykjavik Open | 2021-08-29 |
| Thorhallsson, Simon | Ragnarsson, Heimir Pall | 1-0 | B75 | European Individual Chess Championship 2021 - Reykjavik Open | 2021-08-27 |
| Thorhallsson, Simon | Williams, Simon K | 1/2-1/2 | C11 | Goðinn 20th Anniversary Open | |
| Thorhallsson, Simon | Oskarsson, Markus Orri | 0-1 | D02 | Goðinn 20th Anniversary Open | |
| Thorhallsson, Simon | Magnusdottir, Veronika Steinunn | 1-0 | B23 | Goðinn 20th Anniversary Open |